Computer simulation for the impact of electrostatic discharges (ESD) on the power IRF series MOS transistors have been carried out. The influence of the printed circuit board (PCB) capacitance values on the transistor gate-source voltage is investigated. This influence is significant for transistors with low gate – source capacitance was found.
The relation between the ESD voltage and capacitance, from which occurs breakdown of the gate oxide is found. It is shown that the power MOS transistors with the gate – source low capacitance should be ESD protected using a TVS diodes.
The paper considers the method for predicting the durability performance computing using a computer. The basic technique of forecasting durability. The algorithm works of automation of calculating durability. And also developed a database on the characteristics of durability. This article was written as part of a research project (№ 15-05-0029), made with the support of "Science Foundation Higher School of Economics" in 2015.
In this paper the method of constructing a macro model the dynamics of stacked bar construction of electronic equipment in the frequency domain based on the finite element method and electromechanical analogy.
Macro model has a dimension equal to the number of variable parameters in the optimization process. This greatly reduces the time optimization with a small number of variable parameters.
The paper presents a review of the main types of cooling systems and the main methods of predicting their reliability characteristics. Creation of the technique allowing to consider features of indicators of reliability of the components of the cooling systems applied in computer equipment is considered. With the help of the technique it is possible to calculate in addition to the electronic component, also the mechanical part of the cooling system, which distinguishes it from the standard methods of reliability assessment. This allows us to give an updated value of reliability. Standard computational models of failure rates are analyzed and supplemented with a number of correction factors that are absent in them. The resulting technique is applicable at various stages of design and creation of systems and computer facilities, as well as in conditions where there is a minimum amount of data on the created equipment.
The article describes the course "Algorithmization of Computing" on the Coursera platform. The objectives of the course are listed. Details are told about the system for evaluating learning outcomes. Data on first-year students are analyzed.
The article discusses the thermal model of Peltier element and a heat pipe intended for inclusion in the overall thermal model design of electronic equipment to optimize system parameters to ensure its thermal regime. Models are constructed on the basis of experimental data of the manufacturer and contain the minimum number of adjustable parameters.
CentOS 7 was released in 2014, but many system administrators still use the old CentOS 6.x. The more so since updates for CentOS 6 are going to be released till the year 2020. There are a lot of reasons to use the old version, but one of the major ones is significants of functional changes introduced in the new release.
Consider and analyze the current state of modern data centers and existing solutions to design distributed cloud data centers. Author presents hierarchical distributed agent-based control plane. Article covers its main features and five main use-cases of this approach.
The article deals with the issue of reliability, namely the durability of computer engineering. The methodology of the refined estimation of durability indicators of computer engineering in the IDEF0-diagram format is developed. The example of usage of the developed methodology is given. The object of research the graphics card of the AMD Radeon type is chosen. A summary table of the mean group value of the variation coefficient for the subgroups of electrical components, which are part of the selected graphics card, is formed. A comparison of the numerical values of the gamma-percentile operating life of the graphics card, taking into account the different values of the coefficient of variation, was made. The influence of the coefficient of variation on the value of gamma-percentile operating life is considered. The methodology allows obtaining more accurate values of durability indicators and thereby increasing the reliability of the calculated assessment of durability characteristics.
This article describes an approach to assessment of assignments in online course “Computer Graphics” and in-class course “Video Technologies” held on MOOC platform Stepic and self-made platform for evaluation of graphical assignments for editing, encoding and composing video. This approach is suitable for assignments of various formalization.